Braider carrier tension weight



July 24, 1962 s. c. HARRIS BRAIDER CARRIER TENSION WEIGHT Filed June 20,1960 F l G.

INVENTOR. STEPHEN C. HARRIS v ATTORNEYS 3,045,526 BRAIDER CARRIERTENSION WEIGHT Stephen C. Harris, 1336 Warwick Neck Ave.,

Warwick, R.I. Filed June 20, 1960, Ser. No. 37,128 2 Claims. (Cl. 87-56)This invention relates to an improvement in a weight for a braidercarrier. In braider carriers which are manufactured along the generalconstruction lines of M-ossberg Patent 1,630,669, it has been necessaryto lightly oil the vertical standards upon which the weightreciprocates. This has been necessary in order to provide free runningof the weight upon the standards and it has certain deleterious effects.The presence of lubrication in general upon the vertical standards actsas a place upon which fly from the yarn being carried by the carrier mayaccumulate. Additionally, if rubber thread is being covered by thebraider, the tale from handling the thread will fall about the verticalstandards. Conditions such as these cause the vertical standards to gumand a consequent improper operation of the weight mechanism. As a resultof this, it has been necessary in accordance with past practice toperiodically clean the standards of the braider carrier which means thatthe braider must be shut down for periods of maintenance. This is anunsatisfactory situation in a mill where high production is desired-'nited States Patent and it is therefore an object of the presentinvention to I provide a weight construction which will eliminate theneed for oiling the standards of a braider carrier.

A more specific object of the invention is to provide a weight for abraider carrier which will have one or more of the guide portionsthereof provided with oilless bearings.

With these and other objects in view, the invention consists of certainnovel features of construction as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings:

FIG. 1 is a side elevation showing a braider carrier of the generalconstruction upon which the weight referred to may be used;

FIG. 2 is a sectional view taken on iines 22 of FIG.

1 showing one manner in which weight made in accord ance with theteachings of this invention may be constructed;

FIG. 3 is a sectional view taken on lines 3-3 of FIG. 2;

FIGS. 4 and 5 are perspective views of the bearings used in the weightconstruction; and

FIGS. 6 and 7 are perspective views of modified forms of weightconstruction and particularly the bearing means therefor.

With reference to the drawings 10 generally designates the base of acarrier which is provided with a hub 11 and a package spindle 12 risingtherefrom upon which a yarn package such as 13 may be mounted. The hub11 is provided with a pivot pin 14 upon which is rockably mounted alatch 15 which is adapted to pass into engagement with the teeth 16 ofthe package spool 13. The opposite end of the latch 15 is provided withlaterally extending members 17 which are adapted to be engaged by alatch lift 18 in a manner well known to those skilled in the art. 011the base of the carrier there is mounted two standard members 20 and 21.Midway of the standard 21 there is atfixed a thread guide 22 and betweenthe thread guide 22 and the upper end of the latch lift 18 is acompression spring 23.

A tension weight 2-5 is mounted to slide vertical on Patented July 24,1962 the two standard members 20 and 21 and is preferably struck up fromsheet stock so as to form a horizontal plate portion 26 with the sidesthereof turned downwardly to form arms 27. To provide an elongatedhearing for the weight on the standards, there is an upwardly turnedportion 28 with an inturned end 29 that is pierced with a hole 30 inline with a similar hole 31 pierced in the plate portion 26. The plateportion 26 is also formed with a pair of projecting fingers 32 which aregenerally arranged to embrace the standard 21. To complete the basicstructure of the weight, a hook-shaped finger 33 is provided leading offthe upturned portion 28 which serves as a thread guide around which theyarn is looped after passing through the eye 22. Additionally, acompression spring 34 is slid over the standard 20 and bears against theinturned end 29 of the weight 25 and also against an upper bracket 35which holds the vertical standards N and 21 in alignment at the upperend thereof.

In order to provide for proper movement of the weight 25 up and down thevertical standards 20 and 21, there is inserted in the bearing holes 30and 31 bushings 40 (see FIGURE 5). These bushings are cylinders with acircumferential groove 46 and are received in the apertures 30 and 31 ina press fit such that the groove 40' is engaged in the holes 30 or 31.The bushings are preferably made from polymer of tetrafluoroethylene,polytetrafiuoroethylene, into which there has been mixed particles of asilicate such as mica, talc, aluminum silicate, or glass. This type ofmaterial is superior to pure synthetic plastic materials for it hassuperior wear resistance and will not stick against a metal part as isso often the case with such items as nylon and polytetrafluoroethylene.In practice it is found that this bushing material will wipe the metalstandards clean of all foreign material and thus enhances the weightoperation.

Similarly between the fingers 32 a U-shaped bushing may be fitted. TheU-shaped bushing is formed with a peripheral groove 43 which is receivedbetween the fingers 32 in a press fit relationship. This bushing 42 alsomay be made of the same type of material as the bushing 40.

It has also been found that the bushings may vary in form. For instance,a modified form of bushing 42 may be fitted between the fingers 32 (seeFIG. 6). This modified bushing 4-2 is similarly provided with grooves43' around three sides thereof and has a central aperture 45 therein toreceive the vertical standard 21. In this case in order to assurealignment at all times the bushing is not press fitted between thefingers 32 but is merely placed therebetween for a sliding fit.Similarly a further modification may be made in that the U-shapedbushing 42 may be completely eliminated and merely the bushings 40provided as illustrated in FIG. 7. In this latter case the fingers 32serve to rotationally orient the weight with all sliding friction beingpresent at the bushings 40.

I claim:

1. In a braider carrier having a first standard a second standardextending in parallelism therewith, a tension weight being slidablymounted on the first standard, a pair of fingers carried by said weightand embracing the second standard to guide the weight against rotarymovement, said slidable mounting including bushings between the firststandard and said weight, said bushings being composed of a polymer oftetrafluoroethylene to which there has been mixed particles of silicate,said bushings exhibiting the property of superior wear resistance andfreedom of sliding movement without the necessity of lubrication.

:2. A combination as in claim 1 wherein the fingers receive and holdbushing material composed of a polymer of tetrafluoroethylene.

References Cited in the file of this patent UNITED STATES PATENTS OlsonAug. 13, 1940 Jorgenson May 20, 1958 OTHER REFERENCES Article entitledBasic Design for Bearings Made With Teflon Resins; Duponts Journal ofTeflon, March 1960, Vol. 1, No. 3; pages 5, 6, and 7.

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